Blind-fastener



UNITED STATES PATENT OFFICE.

WM. S. KIRKHAM, OF BRANTFORD, CONNECTICUT.

BLIND-FASTENER.

Specification of Letters Patent No. 30,581, dated November 6, 1.860.

To alli whom it may concern.'

Be it known that I, W. S. KIRKHAM, of Brantford, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Shutter and Blind Fastenings; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in whichM Figure l, is an outside View of a portion of a window blind with my invention applied to it; Fig. 2, a section of the same taken in the line m, Fig. l; Fig. 3, a horizontal section of the same taken in the line y, y, Fig. l; Fig. l, a detached View of the fastenin gSimilar letters of reference indicate corresponding parts in the several iigures.

This invention relates to an improvement in the ordinary shutter and blind catches or fastenings which are employed, for securing shutters and blinds in both an open and closed state.

The obj ect of this invention is to facilitate the application of the fastening to the shutter or blind-provision being made for its adaptation to the varying thicknesses of shutters and blinds as also to insure a firm and durable connection of the fastening thereto.

To enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

A, Figs. l, 2, and 3, represents a portion of a window blind to which my invention is applied.

B, is a metal tube or socket at one end of which there is a iianch or plate a. This tube B, may be described as being a cylinder with its sides removed at two opposite points to form parallel planes Z1, one of which is shown in Fig. 4C. Each plane b, is provided with a iianch c, which projects from it at right angles, and these flanches c, c, are tapped to receive the inner parts of screws d, which pass through a plate C, said plate having lugs or projections e, attached which fit over the planes b, Z2, two over each, see Figs. 2 and 4.

D, is a metal bar which is secured in the tube or socket B, by a pivot f. This bar has a spring g, bearing against it and the bar at each end is provided with a shoulder or catch L, as shown in Figs. 3 and 4i.

The bar D, and spring g, are the same as those in the ordinary fastenings and they therefore do not require a minute descrips tion, the operation of the bar being precisely the same as the ordinary ones, one shoulder of the bar catching over a pin on the sill when the shutter or blind is closed, and the shoulder at the opposite end catching over a hook at the side of the building when the shutter or blind is open.

In order to secure this fastening to the shutter or blind all that is required is simply to bore a hole through the shutter or blind at the proper point and insert the tube or socket B, in it at one end and the lugs or projections c, at the opposite end, the lugs or projections fitting over the sides b, b, of the tube or socket. The screws ci, d, are then passed through the plate C, and iianches c, c, and screwed up so as to draw firmly the plates C, to the sides of the shutter or blind, thereby forming a firm attachment of the fastening to the former.

It will be seen that by this arrangement there will be no difhculty as regards the application of the fastening to shutters or blinds of varying widths and itwill also be seen that the connection of the fastening to the shutter or blind is a secure and permanent one, the shutter or blind not being liable to break or give way adjoining the fastening, a contingency which frequently occurs with the ordinary kinds.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

The tube or socket B, having the bar D and spring f, secured within it and provided with the tapped flanches c, c, in connection with the plate C, provided with lugs or projections e, and screws d, all being arranged essentially as and for the purpose herein set forth.

WM. S. KIRKHAM.

Vitnesses SAMUEL BEACH, F. A. HOLGOMB. 

